The WestCoast Main Line (WCML) is one of the most important intercity railway lines in the United Kingdom, part of the British railway system.
This has left a legacy of lower maximum speeds on the line compared to the East Coast route, and the principal solution to the problem has been the adoption of tilting trains, formerly British Rail 's ill-fated APT, and latterly the Pendolino trains introduced by Virgin in 2003.
The WCML is not a single railway; although its main "spine" runs between Glasgow and London, the WCML includes loops which branch off it to serve Manchester, one via Stoke-on-Trent and one via Crewe, then back to the main line at Preston.
Specifically the East Coastmainline was in mind, unlike the WestCoastmainline it was not to be electrified.
The Deltic was a success story, running East Coast services often faster than westcoast services, which had been electrified, and this reduced the reputation of electrified railway as being the way foreward, and keeping up the tradition of fast east coast services.
Also in 1986 the East CoastMainline was electrified and the electric class 91 was developed for it, known as the Inter City 225 with a top speed of 140mph.